Higgs gravitational interaction, weak boson scattering, and Higgs inflation in Jordan and Einstein frames
Higgs gravitational interaction, weak boson scattering, and Higgs inflation in Jordan and Einstein frames
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DOI：
10.1088/1475-7516/2014/06/032
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发表时间：
2014-04
影响因子：
6.4
通讯作者：
Jing Ren;Z. Xianyu;H. He
中科院分区：
文献类型：
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作者：
Jing Ren;Z. Xianyu;H. He
我们通过唯一的四维算符<$H <$H <$<$来研究Higgs玻色子的引力相互作用，其中H是Higgs偶态，<$H是Ricci标量曲率。我们分析了这种无量纲的非最小耦合效应对弱规范玻色子散射的影响。我们明确地建立了非零耦合的两个框架中的非线性-Goldstone等价定理，并分析了么正性约束。我们研究了在10（1 - 30）TeV尺度下Higgs诱导的弱玻色子散射截面，并提出在LHC（14 TeV）和下一代pp对撞机（50-100 TeV）上通过弱玻色子散射实验探测Higgs-引力耦合。我们进一步将研究扩展到Higgs暴胀，并通过耦合通道分析，在暴胀尺度下的大场背景下，定量地导出了微扰么正性的界。根据最近的BICEP 2数据，我们分析了传统的Higgs暴胀模型和改进模型中参数空间上的么正性约束。
We study gravitational interaction of Higgs boson through the unique dimension-4 operator ξH†Hℛ, with H the Higgs doublet and ℛ the Ricci scalar curvature. We analyze the effect of this dimensionless nonminimal coupling ξ on weak gauge boson scattering in both Jordan and Einstein frames. We explicitly establish the longitudinal-Goldstone equivalence theorem with nonzero ξ coupling in both frames, and analyze the unitarity constraints. We study the ξ-induced weak boson scattering cross sections at 𝒪(1−30) TeV scales, and propose to probe the Higgs-gravity coupling via weak boson scattering experiments at the LHC (14 TeV) and the next generation pp colliders (50-100 TeV). We further extend our study to Higgs inflation, and quantitatively derive the perturbative unitarity bounds via coupled channel analysis, under large field background at the inflation scale. We analyze the unitarity constraints on the parameter space in both the conventional Higgs inflation and the improved models in light of the recent BICEP2 data.